Structural features of residue 21 in chain A

*********************************
Electrostatic Interactions:
GLU A 13 OE1	ASP A 21 OD2	3.254	INTRA-CHAIN
GLU A 13 OE2	ASP A 21 OD2	3.079	INTRA-CHAIN
ASP A 21 OD1	GLU A 13 OE1	2.960	INTRA-CHAIN
ASP A 21 OD1	ASP B 302 OD1	3.926	INTER-CHAIN
ASP A 21 OD1	ASP B 302 OD2	3.424	INTER-CHAIN
ASP A 21 OD1	GLU B 312 OE1	2.910	INTER-CHAIN
ASP A 21 OD2	GLU A 13 OE1	3.254	INTRA-CHAIN
ASP A 21 OD2	ASP B 302 OD1	3.290	INTER-CHAIN
ASP A 21 OD2	ASP B 302 OD2	2.939	INTER-CHAIN
ASP B 302 OD1	ASP A 21 OD1	3.926	INTER-CHAIN
ASP B 302 OD1	ASP A 21 OD2	3.290	INTER-CHAIN
ASP B 302 OD2	ASP A 21 OD1	3.424	INTER-CHAIN
ASP B 302 OD2	ASP A 21 OD2	2.939	INTER-CHAIN
GLU B 312 OE2	ASP A 21 OD2	2.950	INTER-CHAIN

*********************************
Hydrogen bonds:

----------------------------------------------------------
|Res1 type| Res1 No.| Chain1| Res2 type| Res2 No.| Chain2|
----------------------------------------------------------
|        R|      307|      B|         D|       21|      A|
----------------------------------------------------------

*********************************
Protrusion Index:
ASP A 21 N	1.54
ASP A 21 CA	1.34
ASP A 21 C	1.06
ASP A 21 O	1.04
ASP A 21 CB	1.42
ASP A 21 CG	1.08
ASP A 21 OD1	0.88
ASP A 21 OD2	1.27

*********************************
Salt bridges:
ASP A 21	ARG B 307	2.785	INTER-CHAIN

*********************************
Van der Waal's Interactions:
SER A 19 OG 163	ASP A 21 OD2 178	-2.309	INTRA-CHAIN
PRO A 20 CD 170	ASP A 21 OD2 178	-0.028	INTRA-CHAIN
ASP A 21 OD2 178	VAL A 22 CG2 185	-0.062	INTRA-CHAIN
ASP A 21 OD2 178	LYS A 24 NZ 199	-0.009	INTRA-CHAIN
ASP A 21 OD2 178	ARG B 307 NH2 1885	-0.117	INTER-CHAIN